| abstract |
The present invention is a hair treatment method, which sets the depth X% in the range of 5 to 80% from the surface of the hair to the center along the axis of the long axis passing through the center of the hair section as the boundary, and divides the hair into A layers (from The part of the surface of the hair that is continuous in color up to a depth of X%) and the layer B (the depth from the surface of the hair that exceeds X% and includes the part of the center that is different from the layer A in color), so that the color of the layer A and the layer B The value of one or more of ΔE ﹡ , Δh, ΔC ﹡ of the color is 3 or more, and the hue or hue of the appearance of the hair changes according to the different viewing angles. The present invention is a hair dyeing method comprising: step (I), which is to dye hair by a two-part permanent hair dye; and step (II), which is selected from (Α-1) to The hair dye of the dye of (Α-8) is used for hair dyeing. |